Testing for surf library's xdr encode/decode

[schwehr]

Trying to sketch out how to do testing of xdr_surf.[ch]. Should be able to do it without having to touch files on disk... here is a sketch of how I think it should be done. I used xdr_int to stand in for calls from the API.

#include "xdr_surf.h"

#include <rpc/xdr.h>
#include <cstdint>
#include <cstdio>
#include <vector>

#include "testing/base/public/gunit.h"

namespace {

TEST(SurfTest, WriteRead) {
  std::vector<char> buf(8, 0);
  int expected = -123;
  {
    FILE *out = fmemopen(buf.data(), 8, "w");
    XDR xdrs;
    xdrstdio_create(&xdrs, out, XDR_ENCODE);
    int value = expected;
    EXPECT_TRUE(xdr_int(&xdrs, &value));
    xdr_destroy(&xdrs);
    EXPECT_EQ(0, fclose(out));
  }

  {
    FILE *in = fmemopen(buf.data(), 8, "r");
    XDR xdrs;
    xdrstdio_create(&xdrs, in, XDR_DECODE);
    int value = 0;
    EXPECT_TRUE(xdr_int(&xdrs, &value));
    EXPECT_EQ(expected, value);
    xdr_destroy(&xdrs);
    EXPECT_EQ(0, fclose(in));
  }
}

}  // namespace

[schwehr]

Or probably xdrmem_create rather than fmemopen and xdrstdio_create

[dwcaress]

The formats that are based on XDR are Surf (181), the Atlas HSMD (101, 102) and HSDS2 (182, 183) formats, and all of the HMRG MR1 formats (61, 62, 63, 64).